Cutter head



New, 8 1927.

T. H. OPPENHEIM ET AL.,

CUTTER HEAD Filed Aug. 25. 1926 3 Sheets-Sheet 1 I N m O W h Q J N l Y@ o L! 0 @I l gnventd Nov. w21 1,648,422"

4 T. H. OPPENHEIM ET M.4

CUTTER HEAD Filed Aug. 26. 1926 3 Sheets-Sheet 2 @nvm/dow Nav. is9 1927., @48,422

v T. H. OPPENHEIM ET AL,

GUTTER HEAD Filed Aug. 26, 1926 5 Sheets$heet 3 atten/10,135

Patented Nov. -8, 1927.

Application filed ignsft 2%, 19262.` Speia'il' Noi 13136885` Gui present Yinvention relates to 'cutter headsfor corn hus'keis' conn;` shre'ddrs,einv siige Cutters' andg Vsimilar machines", and has' for'its ohje'ctf'theiprovision of a cutter head 5` in'. which knives o'r sh'rd'd'er'bars may befeni' pl'iyedf atf'fvviil interchangeably or simuitane'* ons "a'ifidiirl anydesired combination?. The invention laslfoi" an object theprovison of a IiiLv'-ll construction whereby the knives may mbe adjusted? to' coin-pensate' forVV wear Y withoutchgingi therd'iusj of; the arc described by the 'c -g edg,- andanother object of the inveition is' to" provide a cutter head. in Y which cutters-'and'shredder' bars may be used 15A 'togetihrandvvfillbeso mounted thatvthe ra-' dius' of the cutting edges ofv the bars and the iinivesf'wiillb equal", and a Afurther object of the invention is to provide a Construction' 'which will Jfacilitate the" adjustment ofthe 2o 'and' wiilf very' eiectuallfv withstand? thev strains imposed uponl the cutter head'in operation.; The invention is illustratediin the accompanyingxdrawings and Will be hereinlafter'ullfv set orth.-

In the drawings: y Y Figure` 1: is a" side elevationv of acu-tter head embodying our present 'invention-' and showing the same equipped with'both shred*- derrbars andkni'ves;

'FigifQ is an endl ei head" shown' in Fig. l ,Y

Fig. y is a' view; similar to'fF-ig. l but shovv'- ing the cutter head equipped with a single knife and'Wii-h counter-balance Weights;-

Fig; 4 is anend elevation of' the4 arrange# mentshovvn in Fig; l

Fig" 5 isf an 'enlarged' detail 'sectional eievaf tion of al portion of onehea'dshovving.more' particularly the manner" of'v securing. the 40 knives ndd the Shredder bars'infplace; ig? 6 i's adetaii" 3o ev'ation1 of the cutter Versp'e'ctve vievv of the filler block employed for' mountingt the knives and also showing the socket 'which re ceivesthe'ller'blochand*' Y 4'5" Fig. 7 isla detail seetionshowing the man-- ner of seeuririg a counterbal'a'nce Weight inllabe'ii i D In? carrying out1 th invention, We' employ 50' ings i'n thev machine traine and, when` emr'- plojvedfin 'oiir'machiiiegisivvv dis-posednear' one end/ of the( :traine so that'itV isf accessible Withiodt `rq-iii'rngifremovadfwhen 're'pair'sor l l.adiiist'fnf'leitfare needed'. Securedfuponi cured@ thereto by set screws 5 inPan obviousstraightan-d" at'aright angie to the'sufrf'aoe clearly inFig. 1. After the base bar' 1'5 of' the@ shredder has been brought intdproperl neartjhe respectivel ends' andthe' center of the-' shaft respectively. These heads each coni'' prise a: hub Sand adiskforming-spokes 4; the? hubs 4being tit-ted around thesh'att eind-sei*v maimeii Whi1e`- one ofl theV end head'si is-Vl priorV vided `with;notches or 'saw-teeth- 6 whichl act-k totea'i1 e any" twine"y or" strings? which stn'rt to! Wrap arolind--thehearingsi.

' on one: Side: face or @aen-head or disk and@ at the outer vend of each spoke 4, vve foiniia rest or iug- 7 rwhich i'sholl'ovv and? hafszvits bottom' or innermost wail formed With a Y portion at .as-right angleto arrdiuspssingi centrally through` the higV andi-the remain@ ,7W ing' portion. 9 disposedfat 'an angie tovl said `radius and'convergingtoward the end of the spoke and-:the outer side'of thelug.Y Atfthe end' of' the'iugremoe vfromthe bottom por'- Y tion 9 is" a {substantialfvvall 10 hzwiligts'i-'n-vv nenside 11 straight and parallel with"theV radius passing centrallyv through the dugg the outer surface 12 yoff thesaid vvalif, 10 being.V

llf and the outerl ed'gesof the side Walls' of the lug being'ush with and forminpye/X-V tensionsY of the surface 12, as' shown in Figs;- 5 and 6. `Through the portion 8 ofthe'botf tom wallv of thel lugf is aniopening1-3J and`V`J through'fthe'portion 9" is aslot-'14. WVhenZashredder bar is tobe attached tofdieicutt'eif headf7 the; base b'ar 15V thereof is" placed'f against the 'several' heads so' as' to' i'efstfdif rectly onthe iat surf'acefvlf" of the' corre-I sponding lugs;y and it may beV noted' at this- -point that the lugs and spokes iofftheseveral" heads are sovarranged` reiativeiy, to 1 each?- other` that the knives andshredde-r bars: when inpiace will bespirallv disposed?, as' shoWn position upon the l several heads and ings 7', n

a boit 161i's insertedfthroughan openingproe. videdv thereforA inE the shredder .ba-fr andv through thepenin'gA 13in the respectivedug, a retaining n'ut 17 being fitted ,upon` the in.h` ner end-vo-fithefbolt to bear' againsttheinner surface of the bottomy Wall of' theA lug;`v as? shown vclearly in ]3`ig-5;- As hasjbeenfstatech4 the parts are' accessible from the end'othe machine framev When the cutter head isi. in'y Vuse's'o.- thatii' repair or renewal" ofl a shredL der bar of a kniteais necessary, Aa'lsocketf Wrench be engaged'overthe'headzo the. boitfl-G? and the boit'v rotated so asfto free'fthe sof cof f- I ion? bar without requiring the. cutter head to Abey mation and angle brackets 18 secured upon the vouter surface of the bar in abuttingrelation, as shown in Fig. 1, the outstanding web or member 19 of each brackets-beingy notched, as shown at 20, Fig. 5, whereby aVA pair of teeth 21 are produced. When so desired, the brackets 18 may be so disposed upon alternate bars that the shredding teeth will'be pronouncedly' staggered, but itwill be noted upon reference to Fig. 1 that the inclination assumed by the teeth through the spiral disposition -ofthe shredder bars im-` parts a somewhat staggeredrelation thereto.

When the knives, indicatedat 22, are! to bemounted upon the heads, filler blocks 23 are employed. These filler blocks are so shaped that they .will t snugly within the respective lugs 7 and abut iiatly against the outer surface ofthe bottom memberA thereof. In one end of each filler block is a rightangle'recess 24 which accommodates the surfaces 11 and 12 of the lug and enables the filler blockV to rest squarely on and against said surfaces, as shown in Fig. 5. The outer end surface of each filler block is arcuate, as shown at 25, so that a firm bearing and support for the blade is provided and at-the recessed end of the block a lip 26 'rises therefromto carry a set screw 27, the said set screw being adapted to bear against the back edge of the knife blade so that adjustmentof the blade to compensate forwear may be veryeasily accomplished. It will be noted also that the bevel of the cutting edge of the blade-is on the inner or under side, as shown at 28, this arrangement serving to maintain the cutting edge so that grinding of the .blade will be very seldom required. It Awill also'be noted upon reference to Fig. 5 that a shoulder 29 is formed upon the filler block atthe base of the lip 26 and a cooperating stop lip 80 is provided upon the wall of the lug so that the thrust against the knives will be very efectually taken up. Ity will also be.

noted that this stop lip 30 is engaged bythe back edge of the shredder bar when said bar-is in place,so that the thrust againstl theshredder bar is likewise taken up, theV strain upon the securing bolt being correspondingly reduced. The knife blade is secured upon the filler block by a bolt 31 inserted through an opening provided therefor in the blade and through a longitudinal slot 32 provided in the filler block, the inner end of the bolt passing through'the slotll in the lug and being equipped with a nut 33 corresponding in its function and method of manipulation to the nut 17 previouslyv of ythe portion 9 of the b ottomfwall-of the lug is such that the clamping action of the bolt Y31 and the nut 33 is exactly at a right angle thereto as 'well `as Vat a ,rightv angle to the knife at the point where the bolt engages the knife so that the knife will be" very securely clamped to the filler block and to the head. It. is also to be noted that the slots14 and 32 permit the bolt 31 to move outwardly with respect to the head land the block `while. at the same time retaining its lateralA relation thereto and, consequently, the blade may be very .easily adjusted inasf, much as it is necessary merely to slightly/ loosen the' bolt 31 and then properly. manip- 'y provided at all times.

In the actual use of corn-husking and shredding Y machines, various conditions have to be met. Some .farmers desire their corn stalks or fodder to`be cut into comparatively long pieces,wvliiler others nprefer it cut into very short pieces yand others prefer to have it merely shredded-into strings and stillothers desire it to be cut into relatively short lengths and also shredded. In Figs. 1 and'2, we have shown the head equipped with two diametrifcally opposite `shredder bars and alternately with two diametrically opposite knives so that the fod-` der is'notv only shredded. butV .is also cut. If it be desired to merely cut ythe fodder into pieces of average length,` the shredder bars, shown in Figs. land 2, Vmay be removed and the two diametrically opposite v knives employed.' If it be desired to `cut the stalks into very short pieces, four knives may be employed, two knives being substituted forthe shredder bars shown in Figs. 1 and 2, and, of course, if so desired, all the knives may be removed and shredder bars substituted therefor. If it be desired toy cut the stalks into comparatively long strips without shredding them, a single knife may be employedyas shown in Figs. 3' and 4. When a single knife is employed, it is of course, advisable to provide some means of counterebalancing the weight Yof thev knife and the filler. blocks upon which it is mountedand lfor .this'purpose we .provide 34. These the counter-balancev blocks I blocks `34 are castings; havingtheir inner portions shaped to Conform yclosely to the interior of a lug 7 so that they.v may fit snugly therein and be secured by bolts inserted through openings provided therefor, in the counter-balance blocks and through the slots 14, as shown in Fig. 7. In the outer surface ofl each counter-balance block is formed a recess 36 to accommodate the head 37 of the bolt 35 so that the head `will not project beyond the outer face of the block and will, moreover, rest against a fiat surface so that a properfirm fastening of the weight may be effected. As

shown in Fig. '3, the end wall 38 of the re-v cess 36 is arcuate to accommodate a wrench head when it is desired to remove the counter-balance 'without removing the cutter head from the machine. It is also to be noted that the edge portions of the counter-weight are properly formed to'prof ject over and rest upon the outer surfaces of the respective lugs, as shown at 39.

improved construction of cutter Our head facilitates the assembling of the parts so that the head can be very expeditiously assembled in any desired combination of cutting or shredding elements and the adjustment may be very easily and rapidly changed if desired. 'Moreoveig the parts are so constructed and arranged that the shredder bars or knives arev very firmly secured in place vwith minimum strain upon the securing bolts so that the cutter head will stand up without breakage under very severe usage and will operate successfully provided peripherally with spaced hollow lugs each having its outer side open through the greater portion of its area and formed I with a supporting surface, at the rear of the open portion, a stoplip at the rear of said open portion, elements .to rest against the rear supporting surfaces of the lugs and abut the stop n lips, and means inserted through the said elements and the lugs for securing the said elements in place.

3. Cutting mechanism comprising provided at their peripheries with spaced hollow lugs each formed at oneend with intersecting flat surfaces and having theirV Vbottom walls disposed in angular formation,

the greater portion ofthe bottom wall being,

provided' with a longitudinal slot, filler blocks engageable in the respective lugs and disks each havingv an angularly recessed end to 1 fit against the intersecting flat surfaces of the end of the lug and provided with a longitudinal slot alining with the longitudinal slot'in the bottom wall of the lug, a

knife resting across the Vouter wallsrof the filler blocks, andv securing bolts engaged through the knife and passing through. the said severaly slots and equipped at their inner ends with retaining nuts. Y

4:. Cutting mechanism comprising disks provided peripherally with hollow lugs,l`

filler blocks fitting in the lugs and held against rotation thereby, the lugs and the filler blocks being provided with alining longitudinal slotsand the filler blocks being.

provided each rat one end with an outwardly extending lip, a knife resting across the several filler blocks, bolts engaged through the knife and through the longitudinal slots of the filler bloc-ks and the lugs, and set bolts mounted in the said lips and bearing against the back edge of the knife.

5. Cutting mechanism comprising disks provided peripherally with hollow lugs each having a stop lip at its rear side, blocks fill-r Y ing the respective lugs and held against rotation thereby andeach provided at its rear side with a shoulder bearing against the respective adjacent stop lip, and means for securing the blocks within the lugs.

In testimony whereof we affix our signatures. Y THEODORE H. OPPENHEIM. [L. s.]

BERNARD SELHORST. [1..r s.] 

